SMART链接：

S7-200 SMART

https://new.siemens.com/cn/zh/products/automation/systems/industrial/plc/simatic-s7200-smart.html

STEP 7- Micro/WIN SMART

https://w2.siemens.com.cn/download/smart200/STEP7%20MicroWIN%20SMART%20V2.6.Zip

PC Access SMART软件下载

https://w2.siemens.com.cn/download/smart/PC_ACCESS_V2.3.iso

GSD文件

https://www.ad.siemens.com.cn/download/docMessage.aspx?Id=8588

STEP 7 V5.6

STEP 7 V5.6 SP1

STEP 7 Professional 2017 SR1

https://support.industry.siemens.com/cs/us/en/view/109761679/zh

STEP 7 V5.6

STEP 7 V5.6 SP2 

STEP 7 Professional 2017 SR2 

https://support.industry.siemens.com/cs/us/en/view/109773842

STEP 7 V5.7

STEP 7 V5.7

STEP 7 Professional 2021

https://support.industry.siemens.com/cs/us/en/view/109796156/zh

经典STEP 7帮助手册https://support.industry.siemens.com/cs/cn/zh/view/109751825 

STEP 7硬件配置和通讯连接组态https://support.industry.siemens.com/cs/cn/zh/view/109751824 

SIMATIC S7-300和S7-400梯形图手册(LAD)https://support.industry.siemens.com/cs/cn/zh/view/109751823 

SIMATIC S7-300和S7-400语句表手册(STL)https://support.industry.siemens.com/cs/cn/zh/view/109751814 

SIMATIC S7-300和S7-400功能块图手册(FBD)https://support.industry.siemens.com/cs/cn/zh/view/109751819 

SIMATIC S7-300和S7-400 SCL手册（英文版）https://support.industry.siemens.com/cs/ww/en/view/5581793 

SIMATIC S7-300和S7-400 GRAPH手册（英文版）https://support.industry.siemens.com/cs/ww/en/view/1137630  

S7-300/400系统软件和标准功能https://support.industry.siemens.com/cs/cn/zh/view/109751826 

S7 Distributed Safety -组态和编程https://support.industry.siemens.com/cs/cn/zh/view/22099875 

S7-Technology手册https://support.industry.siemens.com/cs/cn/zh/view/30119663